Ventilator



A 1,624,2 l Ap", 12 1927" H. E. 'rRou-rMAN 9i VENTILATOR Filed AUI. 25. 1923 2 Sheets-Sheet 2 CII Patented Apr. 12, 1927.

UNITED STATES HOWARD E. TROUTMAN, OF CHICAGQ-ILLINOIS.

VENTILATOR.

Application led August 25, 1923. Serial No. 659,377.

This invention relates to ventilators and relates particularly to ventilators of the ejector type designed and adapted for withdrawing foul or heated air from enclosed or dead air compartments or spaces of vehicles, which are operated by currents of air induced by motion of the vehicle to which applied.

The object of the invention is to provide a ventilator for the purpose and of the type specified, which sha-ll be eective in operation, simple in construction and inexpensive to manufacture and install.

To effect the objects of the invention, my improved ventilator comprises the various features, combinations of features and details of construction hereinafter described and claimed.

In the accompanying drawings in which my invention is fully illustrated,

Figure l is a perspective view of one form of ventilator embodying my invention and improvements, shown as applied in use to an automobile for Ventilating the space at the rear end of the hood between the dashboard, which separa-tes said space from the engine compartment of the hood and the instrument board, showing the ventilator in operative position.

Figure 2 is an enlarged sectional, top plan view of the ventilator shown in Fig. l, the section being taken on the line 2 2 of Fig. 1.

Figure 3 is a side View thereof showing the ventilator open.

Figure fi is a view similar to Fig. 3 showing the ventilator closed.

Figure 5 is a sectional elevation thereof on the line 5 5 of Fig. 2.

Figures 6 and 7 are views substantially similar to Figs. 2 and 3, respectively, illustrating a modified construction.

Figure S is an enlarged front view of a modified form of ventilator embodying my invention and improvements, said ventilator being shown as open; and

Figure 9 is a sectional view thereof' on the line 9-9 of Fig. 8.

In the drawings, in which, for purposes of clear and definite illustration, I have shown a ventilator embodying my invention and improvements as applied in use for ventilating the enclosed space or compartnient of an automobile, formed by the overhanging rear end of the hood, the dashboard which separates said space or compartment not desire to limit myself thereto, as the invention admits of a wide range of'application and use and it is my desire and intention to cover and protect the invention for all uses and applications for which it is adapted.

Referring now particularly to Figs. l to 5 of the drawings, in which I have shown what I now consider to be the preferable embodiment of my invention, the ventilator A consists of a hinged member designated.V

as a whole 'A1, comprising a' plate l supported so as to be movable towards and from an opening 2 formed in the overhanging rear portion o of the hood and adaptedto open and close said opening when in raised and lowered positions, respectively, said plate being so proportioned that its edges will overlap the edges of the hood b surrounding said opening 2.

As shown, the plate 1 is supported and is adapted to be opened and closed by means of a bell-crank lever 3 pivoted to lugs Il formed on hangers 5 secured to the hood b, the plate 1 being secured to the arm 6 of said bell-crank lever and said bell-crank lever being adapted to be turned pivotally to raise and lower said plate by means of a rod 7 pivoted to the arm 8 thereof, said rod 7 extending through a hole 9 formed in 'the instrument board b2 and being adapted to be secured in open position by means of notches l0 formed therein, which are adapt-- ed to engage a rib or lug 11 on said instrument board. The rod 7 is so positioned that its projecting rear end will be conveniently accessible for operation by the driver of the vehicle.

I do not, however, desire to limit- `myself to the particular means shown for supporting and operating the plate l, as other means suitable for the purpose will readily suggest themselves to others skilled in the art, and my invention contemplates t-he use of any desired means for supporting and operating said plate.

Formed on the plate 1 are depending front and side walls or flanges designated, respectively, 12 and 18, said walls being loosely litted to the corresponding sides ot the opening 2 and being so proportioned that they will extend below the seat for the plate 1 inall positions ot' said plate. ils shown, also, the depending iront wall 12 ot the apparatus is bent to lorm a segment of a cylinder concentric with the pivotal axis ot' the bell-crank lever et.

Formed in the depending 'front wall or flange 12 ot' the apparatus are holes 14 secured in which, so that their lli-ont ends will be substantially flush with the vfront side of the wall 12, are ejectorI nozzles 15 which are adapted to discharge through holes or openings 16 formed in the side walls 13 of the hinged member A1, the holes 1st being somewhat larger than the discharge ends of said ejector nozzles, which preferably terminate a short dist-ance inside ot the side walls 13.

1n the preferable construction shown, also, the ejector nozzles 15 are tapered, the discharge ends thereof being appreciably smaller than their front or admission ends. Preferably, also, short pipe sections 17 are secured in the holes 16 in the side walls 13, into which the discharge ends of the ejector nozzles 15 extend, said pipe sections 17 being preferably supported substantially concentric with the discharge ends ot' said ejector nozzles and being correspondingly flared.

TvVith the described construction, it is ob l vious thatV when the plate 1 is raised, as shown in Figs. 1, 3 and 5V of the drawings, and the vehicle is traveling at any considerable speed, currents of air will be created through the ejector nozzles 15, the velocity of which will be proportionate to the speed with which the vehicle is traveling and which will be increased at the discharge ends of the ejector nozzles 15 owing to their reduced size. Obviously, also, the currents or' air discharged from the ejector nozzles 15 through the pipe sections 17 secured in the holes 16 in the side walls of the movably `supported member' A1 of the ventilator will create a suction in said pipe sections which will operate to draw air from the space B of the vehicle and discharge it through said pipe sections 17.

With the construction described, it is also obvious that the ventilator may be rendered inoperative by merely turning the hinged section A1 pivotallyinto closed position, as shown in Fig. 4.

As a modilication of my invention, l: contemplate dispensing with the depending side Walls or llanges 13 and the pipe sections 17, and discharging the ejector nozzles 15 directly through the open sides of the hinged section A1 of the ventilator. With this construction, the open sides of said hinged sections may be entirely open and unobstructed but, it' desired, my invention contemplates securing tine-mesh screens in the open sides ot said hinged sections, which will prevent dust and dirt from entering the compartment B when the vehicle is station ary and the ventilator is open.

rThis modification is shown in Figs. G and T ot the drawings, in which 11 designates the hinged plate forming part ot the hinged member 112, 12L the depending front wall or llange secured thereto provided with the admission openings 141, 151 the thimbles or elbows secured therein and which discharge through the open sides of the hinged section il ot the ventilator, in which fine-mesh screens 18 may be secured.

As a further modilication of my invention, l contemplate the use .or a hinged section A1 consistingmerely or' the plate 1 and the depending front wall or lange 12, said depending iront wall or flange being entirely closed and the air being withdrawn from the compartment B by the suction created at the open sides of the hinged section or" the ventilator by the currents of air blowing across the same when the vehicle is in motion.

rl`his modification is shown in Figs. 8 and 9 ot the drawings, in which 12 designates the plate forming part of the hinged section A1 ot the ventilator, and 122 the depending tront wall or flange thereof, said wall or liange being entirely closed.

1 claim- 1. 1n a ventilator adapted to induce suction at an exhaust opening of a space to be ventilated, the combinationv of a movably supported member comprising a cover plate tor covering and uncovering said exhaust opening, a wall which depends from said cover plate in close proximity to a side of said exhaust opening provided with an opening, and an ejector' nozzle the admission end or' which is secured to sai-d depending wall with its admission end in communication with the opening therein and its discharge end directed laterally with respect t0 its admission end.

2. A. ventilator as specified in claim 1, in which the discharge end ot the ejector nozzle is contracted.

3. A ventilator as specified in claim 1, in which the ejector nozzle is substantially elbow shaped.

41. ln a ventilator adapted to be applied to an exhaust opening of a space to be ventilated, 'the combination `ot a movably supported member comprising a cover plate for covering and uncovering said Vexhaust opening, means for imparting movement to said cover plate to cover and uncover said exhaust opening, and means in Aassociation with said cover plate rendered operative by ourrents of air traversing said ventilator, for inducing suction at said exhaust opening, when said cover plate is in open position comprising a Wall provided with openings which depends from the cover plate in close proximity to a side of said exhaust opening, side Walls provided with discharge openings which also depend from said cover plate into said exhaust opening, ejector nozzles secured to said first-mentioned Wall With the admission end of each thereof in communication With an opening therein and the discharge ends thereof directed laterally with respect to their admission ends and in opposite directions to each other, each in line With the discharge opening in a side Wall.

5. A ventilator as specified in claimvil, in which the movably supported member also includes pipe sections secured to the side Walls thereof in communication with the discharge openings therein.

6. A ventilator as specified in claim 4, in which the -movably supported member also includes pipe sections secured to the side Walls thereof in communication with the discharge openings therein, and the discharge ends of the ejector nozzles terminate intermediate the ends of said pipe sections.

7. A ventilator as specifledin claim il, in which the movably supported member also includes pipe sections secured to the side Walls thereof in communication With the discharge openings therein, and the discharge ends of the eject-or nozzles terminate intermediate the ends of said pipe sections, the discharge ends of said ejector nozzles being contracted and said pipe sections being outwardly flared.

In Witness that I claim the foregoing as my invention, l aflix my signature this 14 day of August A. D. 1923.

HOWARD E. TROUTMAN. 

